Ultrasound: Pelvic: Difference between revisions
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Definite IUP = gestational sac containing yolk sac | Definite IUP = gestational sac containing yolk sac | ||
*Occurs ~5.5th week | *Occurs ~5.5th week | ||
** MUST contain yolk sac to be confirmed IUP. Pseudogestational sac possible in ectopic pregnancy | **MUST contain yolk sac to be confirmed IUP. Pseudogestational sac possible in ectopic pregnancy | ||
*B-HCG below Discriminatory Zone = <1,500-3,000 mIU/ml | *B-HCG below Discriminatory Zone = <1,500-3,000 mIU/ml | ||
*Consider Transabd US for IUP: >6000 mIU/ml | *Consider Transabd US for IUP: >6000 mIU/ml | ||
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Estimated gestational age | Estimated gestational age | ||
*can be measured by crown rump length, femur length, biparietal diameter, etc. | *can be measured by crown rump length, femur length, biparietal diameter, etc. | ||
** depends on gestational age and quality/type of image acquired | **depends on gestational age and quality/type of image acquired | ||
Fetal Heart Rate | Fetal Heart Rate |
Revision as of 15:43, 10 July 2016
OB
Definite IUP = gestational sac containing yolk sac
- Occurs ~5.5th week
- MUST contain yolk sac to be confirmed IUP. Pseudogestational sac possible in ectopic pregnancy
- B-HCG below Discriminatory Zone = <1,500-3,000 mIU/ml
- Consider Transabd US for IUP: >6000 mIU/ml
Endometrial mantle
- normal size > 8 mm
Estimated gestational age
- can be measured by crown rump length, femur length, biparietal diameter, etc.
- depends on gestational age and quality/type of image acquired
Fetal Heart Rate
- normal 120-160
- Use M-mode to calculate
- First visible on US ~6 wks at 100-120 bmp[1]
Nonpregnant
- Ovarian Torsion
- increased risk with cyst(s) > 5mm
- Want to visualize arterial and venous flow
Diagnostic Algorithm
Video
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See Also
References
- ↑ Shetty A, Weerakkody Y. Fetal Heart Rate. http://radiopaedia.org/articles/fetal-heart-rate